John w



(No Model.)

.J. W. L. SCOTT.

SEWING MACHINE.

No. 443,009. Patented Dec. 16, 1890..

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I UNITED STATES PATENT Orrrca.

.IOIIN IV. L. SCOTT, OF EDVVARDSVILLE, ILLINOIS, ASSIGNOR OF ONE-IIALF TO CHARLES N. TRAVOUS, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 443,009, dated December 16, 1890.

Application',fi1ecl May '7, 1890. Serial No. 350,885. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN IV. L. SCOTT, of Edwardsville, Illinois, have made a new and useful Improvement in Sewing-Machines, of

which the following is a full, clear, and exact description.

The improvement is applicable to various forms of sewing-machines, but more especially to machines for sewing shoes and har- Io ness.

The leading features of the improved construction are an underneath curved needle working upward and downward in a curved guide, a hook adapted to be vibrated later- I 5 ally into and out of the plane of the movement of the upper portion of the needle and so as to take the stitches successively from the needle, and a circular-dished rotating feed and presser device, all substantially together with minor features of construction, as is hereinafter set forth and claimed, aided by the annexed drawings, making partof this specification, in which Figure I is a side elevation of the improved 2 5 machine. The portions of the machine not essential to an understanding of its improved features are not shown. Fig. II is a front end elevation of the machine; Fig. III, a vertical section on the line 3 3 of Fig. I; Fig. IV, a

cross-section, upon an enlargedscale, of the needle; and Figs. V to XV, inclusive, views illustrating the relative action of the needle and hook, Figs. V and VI being views, respectively, at right angles to each other, and

3 5 showing the needle projected upward and the hook in the plane of the needle; Figs. VII

and VIII, views corresponding, respectively, to Figs. V and VI, but showing the hook out of the plane of the needle; Figs. IX'and X, corresponding views showing the needle up and the hook in position to take the stitch; Figs.

XI and XII, corresponding views showing the needle down and thehook upholdingthe stitch;

Figs. XIII and XIV, corresponding views 4 5 showing the needle up again and carrying the second stitch through the loop of the first stitch, and Fig. XV showing the needle projected upward through the welt of a shoe, and also showing a support for the welt. In Figs.VI,

VIII, X, XII, and XIV the material being sewed is shown 5 Fig. XVI, a view illustrating the stitchmade on the present machine; and Fig. XVII a horizontal section of the hook.

The same letters of reference denote the same parts. i

The frame work of the machine consists, mainly, of the standard A, the overhanging arm 15, and the horn C.

The needle D is held and adapted to be worked longitudinally in a channel d in the outer end 0 of the horn. The channel and needle are relatively fitted to each other to enable the needle to be moved longitudinally in the channel, and also so that the wall of the channel shall offer lateral support to the needle, especially at and near the outer end of the channel. The needle is curved substantially as shown, and its movement is indicated substantially by its positions shown in the various figures. \Vhen the needle is withdrawn downward to its lowest limit, it is wholly within the channel 01, and the work E being operated upon can rest upon the end 0 of the horn. IVhen the needle is projected to the opposite end of its stroke, its point is carried not only through the work E, but sufticientlypast the point f of the hook F to enable the hook to take the stitch from the needle. The movement of the needle is effected, preferably, by means of the pitman G, which, at its outer end g,is jointed to the needle, and at its inner end g is jointed to the wrist-pin h of a crank H, which is fast upon a shaft I,'journaled in suitable hearings in the standardA, substantially as shown. The shaft is driven by means of a belt (not shown) passing around the pulley J, which is fast on the shaft I. The hook F is operated to cause its point f to be moved laterally toward and from the portion of the needle which is pro- 9o jected above the horn, the movement being substantially indicated in Figs. V, VI, VII, and VIII. The movements of the needle and hook are relatively contrived to enable the hook to take a stitch from the needle, uphold it until the needle has carried up the next stitch through the loop of the stitch upon the hook, and then cast off the first stitch and take on the second stitch, and so on.

The preferable mode of constructing and operating the hook is as follows: The hook extends upward and at its upper end f is fastened to a rock-shaft K, which is journaled in bearings L L in or upon the overhanging arm 13, and is provided with an arm L,which extends downward to eoact with a camjupon the pulley J. As the pulley rotates the cam encounters and thereby causes the lower end of the arm L to be swung laterally, and the shaft K is thereby rotated in its bearings to effect the described movement of the hook. After the arm L has been swung aside, as described, by the action of the cam j any suitable meanssucl1 as gravity or other familiar means-are utilized to effect the return of the arm L and hook to their original position, substantially as described.

M represents the dished, toothed, pointed, or serrated wheel, which servesa double purposeto feed the work and to hold the work down upon the horn. It is journaled at m in an arm m, which is upheld in the overhanging arm 15 by means of the cam-lever N, which is pivoted at 11 to the arm m, and bears at it upon the top of the overhanging arm B. The arm m is preferably journaled at m in the arm B to enable the wheel, by means of its handle on, to be turned horizontally around to suit the position of the work E being operated upon. A spring m pressing upward against the arm I; and downward upon a shoulder m upon the arm m serves to force the wheel M downward upon the work with suffieient pressure. The rotation of the wheel M upon orin its journal 1)). and the consequent feeding of the work is effected by the pawl O coacting with the serration in upon the wheel. The pawl at o is jointed to a lever I, which is fnlcrumed in or upon a bearing Q, attached to the arm 1;. 3y drawing the end 1) of the lever downward the end 1) of the lever is lifted, and the pawl 0 thereby caused to rotate the wheel M. The movement is indicated by the broken lines in Fig. I. The vibration of the lever P is effected, preferably, by means of the strap R, which atits upper end 1' is connected with the lever 1 and at its lower end r with an eccentric r upon the shaft I, whose revolution thus causes the strap R to move upward and downward and the lever I to turn upon its bear ing Q. The bearing Q is adjustable longitudinally upon the arm 15 to enable the lever end 1) to be vibrated through a greater dis-' tance, and the wheel M to be rotated farther around at each revolution of the shaft I. The connections of the lever P with the bearing Q and strap R are such as to permit of the described adjustment of the lever I. The lever P at its end 1) preferably encircles the arm m, which thus serves as a guide for the lever l in its movement. The arm in is made with an offset 111 to provide room for the wheel M, as shown. 13y turning the camlever N on its pivot the wheel M can be raised and lowered.

S represents the thread.

T represents a support for the welt c as it is being sewed.

The needle and the pitinan G are connected, preferably, by shaping the needle to form or providing it with an offset (1', and jointing the pitman end g to the offset, which is also made to project to work in a curved slot (Z in the side of the horn, by which means the movement of the needle is effected more advantageously, as thereby the needle is guided at its inner as well as at its outer end.

The needle, as shown in FigIV, is grooved at (Z to provide more room for the thread S, and the hook-shankf above the hook-point is grooved at f to provide more room for the needle-point as the needle rises past the hook. The thread S passes through a passage 8 in the horn to the needle.

I claim 1. In a sewing-machine, the combination, with the shaft Lthe driving-pulleyJ thereon, and the cam j on the side of the drivingpulley, of the rock-shaft K, journaled in the bearings in the overhanging arm B, the arm L, depending from said shaft in the path of the cam j, the hook F, depending from the rock-shaft and having the point and the curved reciprocating needle co-operating with said hook, substantially as specified.

2. In a sewing-machine, the combination, with the standard, thehorn, the overhanging arm B, the hook F, the curved needle moving in a channel in the horn, and the pitman operating said needle and connected to the wheel II on the shaft I by a wrist-pin h, of the arm in, journaled and turning in the bearing m on the arm I) and having the curved portion in and handle M3, the dish shaped feed-wheel M, pivoted at the end of the part m of the arm in, the coiled spring in", and the cam-lever N, pivoted to the arm m and bearing on the arm B, substantially as specified.

The combination, with the arm in and the toothed dish-shaped feed-wheel M, pivoted on the lower end of said arm, of the pawl 0, arranged to engage and turn said wheel, the lever l, to which said pawl is pivoted, the eccentric and eccentric-strap connected to and vibrating said lever, and the fulcrum piece or hearing Q for the said lever adjustable longitudii'ially on the arm 13 and arranged to have its point of conn ction with the lever I changed thereon to correspond with its adjustment, substantially as specified.

Witness my hand this 5th day of May, 1890.

JOHN M. L. SCOTT.

Witnesses:

( I). Mooov, II. M. THOMPSON. 

